一个好用的Python备份mysql的脚本

前几天打算用Python写一个mysql脚本，上Google看了下老外写的，写的挺好的，原地址在http://tecadmin.net/python-script-for-mysql-database-backup/#，所以就给 copy过来了

 #!/usr/bin/python
 ###########################################################
 #
 # This python script is used for mysql database backup
 # using mysqldump utility.
 #
 # Written by : Rahul Kumar
 # Website: http://tecadmin.net
 # Created date: Dec 03, 2013
 # Last modified: Dec 03, 2013
 # Tested with : Python 2.6.6
 # Script Revision: 1.1
 #
 ##########################################################

 # Import required python libraries
 import os
 import time
 import datetime

 # MySQL database details to which backup to be done. Make sure below user having enough privileges to take databases backup.
 # To take multiple databases backup, create any file like /backup/dbnames.txt and put databses names one on each line and assignd to DB_NAME variable.

 DB_HOST = 'localhost'
 DB_USER = 'root'
 DB_USER_PASSWORD = '_root_user_password_'
 #DB_NAME = '/backup/dbnames.txt'
 DB_NAME = 'db_name'
 BACKUP_PATH = '/backup/dbbackup/'

 # Getting current datetime to create seprate backup folder like "12012013-071334".
 DATETIME = time.strftime('%m%d%Y-%H%M%S')

 TODAYBACKUPPATH = BACKUP_PATH + DATETIME

 # Checking if backup folder already exists or not. If not exists will create it.
 print "creating backup folder"
 if not os.path.exists(TODAYBACKUPPATH):
     os.makedirs(TODAYBACKUPPATH)

 # Code for checking if you want to take single database backup or assinged multiple backups in DB_NAME.
 print "checking for databases names file."
 if os.path.exists(DB_NAME):
     file1 = open(DB_NAME)
     multi = 1
     print "Databases file found..."
     print "Starting backup of all dbs listed in file " + DB_NAME
 else:
     print "Databases file not found..."
     print "Starting backup of database " + DB_NAME
     multi = 0

 # Starting actual database backup process.
 if multi:
    in_file = open(DB_NAME,"r")
    flength = len(in_file.readlines())
    in_file.close()
    p = 1
    dbfile = open(DB_NAME,"r")

    while p <= flength:
        db = dbfile.readline()   # reading database name from file
        db = db[:-1]         # deletes extra line
        dumpcmd = "mysqldump -u " + DB_USER + " -p" + DB_USER_PASSWORD + " " + db + " > " + TODAYBACKUPPATH + "/" + db + ".sql"
        os.system(dumpcmd)
        p = p + 1
    dbfile.close()
 else:
    db = DB_NAME
    dumpcmd = "mysqldump -u " + DB_USER + " -p" + DB_USER_PASSWORD + " " + db + " > " + TODAYBACKUPPATH + "/" + db + ".sql"
    os.system(dumpcmd)

 print "Backup script completed"
 print "Your backups has been created in '" + TODAYBACKUPPATH + "' directory"

# chmod +x dbbackup.py

# python dbbackup.py
做定时任务执行:

0 2 * * * /usr/bin/python dbbackup.py